His career started in 1969, aged 19, when he played on the album L.A.M.F, released by Bunky and Jake.

By the end of the year, Rauch had fully replaced and was a full-time member of the band.

He also teamed up with David Bowie for his Diamond Dogs tour for a month in September 1974.

[2][5] During his career, he also played with Papa John Creach, Betty Davis, and Carly Simon.

Rauch died of a drug overdose in San Francisco, California, on April 23, 1979, at the age of 28.